<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package        CodeIgniter
 * @author        ExpressionEngine Dev Team
 * @copyright    Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license        http://codeigniter.com/user_guide/license.html
 * @link        http://codeigniter.com
 * @since        Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * ODBC Result Class
 *
 * This class extends the parent result class: CI_DB_result
 *
 * @category    Database
 * @author        ExpressionEngine Dev Team
 * @link        http://codeigniter.com/user_guide/database/
 */
class CI_DB_odbc_result extends CI_DB_result
{

    /**
     * Number of rows in the result set
     *
     * @access    public
     * @return    integer
     */
    function num_rows()
    {
        return @odbc_num_rows($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Number of fields in the result set
     *
     * @access    public
     * @return    integer
     */
    function num_fields()
    {
        return @odbc_num_fields($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Fetch Field Names
     *
     * Generates an array of column names
     *
     * @access    public
     * @return    array
     */
    function list_fields()
    {
        $field_names = array();
        for ($i = 0; $i < $this->num_fields(); $i++) {
            $field_names[] = odbc_field_name($this->result_id, $i);
        }

        return $field_names;
    }

    // --------------------------------------------------------------------

    /**
     * Field data
     *
     * Generates an array of objects containing field meta-data
     *
     * @access    public
     * @return    array
     */
    function field_data()
    {
        $retval = array();
        for ($i = 0; $i < $this->num_fields(); $i++) {
            $F = new stdClass();
            $F->name = odbc_field_name($this->result_id, $i);
            $F->type = odbc_field_type($this->result_id, $i);
            $F->max_length = odbc_field_len($this->result_id, $i);
            $F->primary_key = 0;
            $F->default = '';

            $retval[] = $F;
        }

        return $retval;
    }

    // --------------------------------------------------------------------

    /**
     * Free the result
     *
     * @return    null
     */
    function free_result()
    {
        if (is_resource($this->result_id)) {
            odbc_free_result($this->result_id);
            $this->result_id = FALSE;
        }
    }

    // --------------------------------------------------------------------

    /**
     * Data Seek
     *
     * Moves the internal pointer to the desired offset.  We call
     * this internally before fetching results to make sure the
     * result set starts at zero
     *
     * @access    private
     * @return    array
     */
    function _data_seek($n = 0)
    {
        return FALSE;
    }

    // --------------------------------------------------------------------

    /**
     * Result - associative array
     *
     * Returns the result set as an array
     *
     * @access    private
     * @return    array
     */
    function _fetch_assoc()
    {
        if (function_exists('odbc_fetch_object')) {
            return odbc_fetch_array($this->result_id);
        } else {
            return $this->_odbc_fetch_array($this->result_id);
        }
    }

    // --------------------------------------------------------------------

    /**
     * Result - object
     *
     * Returns the result set as an object
     *
     * @access    private
     * @return    object
     */
    function _fetch_object()
    {
        if (function_exists('odbc_fetch_object')) {
            return odbc_fetch_object($this->result_id);
        } else {
            return $this->_odbc_fetch_object($this->result_id);
        }
    }


    /**
     * Result - object
     *
     * subsititutes the odbc_fetch_object function when
     * not available (odbc_fetch_object requires unixODBC)
     *
     * @access    private
     * @return    object
     */
    function _odbc_fetch_object(& $odbc_result)
    {
        $rs = array();
        $rs_obj = FALSE;
        if (odbc_fetch_into($odbc_result, $rs)) {
            foreach ($rs as $k => $v) {
                $field_name = odbc_field_name($odbc_result, $k + 1);
                $rs_obj->$field_name = $v;
            }
        }
        return $rs_obj;
    }


    /**
     * Result - array
     *
     * subsititutes the odbc_fetch_array function when
     * not available (odbc_fetch_array requires unixODBC)
     *
     * @access    private
     * @return    array
     */
    function _odbc_fetch_array(& $odbc_result)
    {
        $rs = array();
        $rs_assoc = FALSE;
        if (odbc_fetch_into($odbc_result, $rs)) {
            $rs_assoc = array();
            foreach ($rs as $k => $v) {
                $field_name = odbc_field_name($odbc_result, $k + 1);
                $rs_assoc[$field_name] = $v;
            }
        }
        return $rs_assoc;
    }

}


/* End of file odbc_result.php */
/* Location: ./system/database/drivers/odbc/odbc_result.php */